I am working on restoring a 1925 Steinway XR Duo-Art that may have me
pulling my hair out in the future.  The tubing configuration is much
different than what is shown in the common Duo-Art tubing schematic.
The left side junction box is eliminated and all tubing goes through
two junction blocks through the key frame.

Although I took a fairly comprehensive map when I removed the system,
it would be helpful to have a tubing schematic.  Does anyone know if
such a schematic exist.

Don Barton - Barton Player Piano Co.
Minneapolis, Minnesota